What Are the Reasons for the Transmission Warning Light to Illuminate?
2 Answers
The reasons for the transmission warning light to illuminate are: 1. Damaged electronic components; 2. Severe wear of mechanical components; 3. Incorrect signals from the engine or ABS interfering with transmission operation; 4. Contaminated transmission fluid clogging the solenoid valve; 5. Faulty computer. The solutions for the transmission warning light illuminating are: 1. Perform a computer diagnostic and replace damaged electronic components; 2. Repair or replace damaged mechanical components; 3. Inspect and repair the engine and ABS; 4. Clean the transmission valve body and replace the transmission fluid; 5. Check for transmission fluid leaks; 6. Inspect and repair sensor wiring connections.
Last time my car suddenly lit up the transmission warning light, which scared me so much that I immediately pulled over. This kind of warning light usually indicates insufficient oil pressure or dirty transmission fluid. Not changing the fluid for a long time can cause it to deteriorate and lose its lubricating properties. It could also be due to faulty sensors, such as the vehicle speed sensor or temperature sensor, which can send incorrect signals to the control module once they malfunction. Loose or water-damaged electrical connectors are also common failure points, especially after rainy days. The worst-case scenario is internal mechanical wear, like what happened to my friend's car—the clutch plates slipped, and it ended up costing over ten thousand yuan for a major repair. I remember the repair shop technician saying that automatic transmissions are particularly delicate; if a warning light appears, it must be checked immediately, otherwise, delaying repairs could end up costing half the price of a used car.
